A248789 - OEIS

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A248789

Decimal expansion of the variance associated with the fraction of guests without a napkin in Conway’s napkin problem.

0, 3, 4, 7, 6, 3, 1, 0, 5, 5, 6, 1, 0, 2, 6, 0, 6, 5, 6, 3, 3, 6, 9, 7, 4, 5, 4, 7, 7, 9, 4, 7, 0, 1, 0, 5, 2, 4, 0, 1, 2, 3, 6, 0, 0, 7, 0, 5, 0, 8, 5, 1, 8, 9, 1, 3, 5, 5, 5, 3, 1, 4, 1, 2, 0, 9, 1, 6, 4, 0, 1, 7, 1, 0, 3, 6, 6, 2, 4, 3, 0, 3, 7, 5, 2, 0, 2, 4, 2, 1, 2, 4, 9, 1, 2, 5, 6, 2, 7, 3 (list; constant; graph; refs; listen; history; text; internal format)

	OFFSET	`0,2`
	LINKS	`Table of n, a(n) for n=0..99.` `Anders Claesson, T. Kyle Petersen, Conway’s napkin problem, arXiv:math/0505080 [math.CO] 2005.` `Steven R. Finch, Errata and Addenda to Mathematical Constants, p. 2.`
	FORMULA	`Equals (3 - e)*(2 - sqrt(e))^2.`
	EXAMPLE	`0.034763105561026065633697454779470105240123600705...`
	MATHEMATICA	`Join[{0}, RealDigits[(3 - E)*(2 - Sqrt[E])^2, 10, 99] // First]`
	PROG	`(PARI) (3-exp(1))*(2-exp(1/2))^2 \\ Charles R Greathouse IV, Oct 31 2014`
	CROSSREFS	`Cf. A000670, A068996, A248788.` `Sequence in context: A323394 A348977 A017665 * A105852 A190998 A067342` `Adjacent sequences: A248786 A248787 A248788 * A248790 A248791 A248792`
	KEYWORD	`nonn,cons,easy`
	AUTHOR	`Jean-François Alcover, Oct 14 2014`
	STATUS	`approved`

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Last modified August 30 19:33 EDT 2024. Contains 375545 sequences. (Running on oeis4.)